2019

Yu Liu, Jiazhao Tian, Ralf Betzholz, and Jianming Cai, Phys. Rev. Lett. 122, 110406 (2019)

We propose a novel strategy to reconstruct the quantum state of dark systems, i.e., degrees of freedom that are not directly accessible for measurement or control. Our scheme relies on the quantum control of a two-level probe that exerts a state-dependent potential on the dark system.

Wanlu Song, Tianyi Du, Haibin Liu, Martin B. Plenio, and Jianming Cai, Phys. Rev. Applied 12, 054025 (2019)

Our analysis demonstrates that the platform can achieve sensitivities that allow for the implementation of single-molecule magnetic resonance spectroscopy and therefore opens a promising route towards integrated on-chip quantum-sensing devices.

Juan Mauricio Torres, Ralf Betzholz, Marc Bienert, J. Phys. A 52, 08LT02 (2019)

Both the weak- and the strong-coupling regime, which includes combined decay mechanisms, are solved in this work.